Calendering-machine.



Patented Feb. 4', I902.-

M. ,1. wH|TLock.. CALENDERING MAEHINE.

(Application filed m 27. 1601.:

-(,No Model.)

vided with a piston 7, the pressure on which is transmitted to theroll-bearings.

The chambers 6 are arranged to contain an incompressible fluid, such aswater or oil, and the means by which this liquid isintroduced into thechambers should be of such a character as to enable a fixed pressure ofany desired amount to be maintained in the chambers and at the same timethese means should be such that the degree of pressure may be readilyvaried when desired. In the preferred construction the means by which"the liquid is introduced in the chambers 6 will include a chamber 8,having a piston 9 working therein.- This piston 9 has a collar 10connected to it, said collar being in turn connected by means of rods 11with a second collar 12, to which is secured a sleeve 13, mounted toslide on the outside ofth'e chamber 8. This sleeve 13 is secured to acollar 1t or other similar dcvice, said collarserving to support aseries of weights 15, the whole forming an accumu later of well-knowntype.

The chamber 8 is supported in any suitable manner, as bya base 16, andis supplied with fluid through a pipe 17,which leadstoanysuitable sourceof supplyas, for instance, a pump. The chamber 8 is in opencommunication with the chambers (1' through pipes, which may be arrangedin any suitable manner. As shown, a pipe 18 leads from the lower partofsaid chamber or from the basein which said chamber is mounted to thetop of the calender-frame. At the top of thcfralne this pipe dividesinto two branches 19 and 530, which branches tap the-cylinders U. A suitable valve 21, which is preferably a three-way valve, or maybe locatedat any suitable point in the pipe, and to the casing of this valve thereis preferably connected a wastepipe'BQ. By means of this valve 21the'communication between the chamber 8 and the chambers U may beinterrupted without allowing the liquid to escape fromthe chambers,

or the comm unication may be interrupted and the liquid permitted toescape from the charm .bers (3 through the waste-pipe.

Means are preferably provided to permit the separation of the rolls whenanyloreign matter or a web of unusual thickness passes between them.These means may vary widely in construction. Preferably, however, and asshown, the abutments or cap-pieces are provided with strong springs 23.These springs may be supportedon tho abutmcnts in any suitablemanner.Prefrn'ably, however, the abutmcnts are provided with projections or-.arms 24. to which the springs are connected.

lit will .o t' vcoursebe understood. that' these springs{tlQSlllllGlUlitl V stiff, so as not to yield under the pressureimparted to thcroll-bcaringsby the pistons. 'lheywill, however, yield'uiulei'. t-he strain producedwhcnfiany foreign iuht teror an unusualthic ,betwcenthe rolls.

pf web passes i .lur I The construction being aabct re dcserincd I llbeseen that the we ghts acting on the piston 9 will maintain a constantpressure on the pistons 7 through the chambers and the pipes connectingthem, and it will be further seen that the degrce of: pressure maybereadily and quickly regulated. Furthermore, the attcndant has a readymeans of determining the exact amount of duce any given finish and caneasily secure this pressure by varying the number of weights. It is alsoapparent that should any foreign matter ora web of uu usual thicknesspass between the rolls tl e'springs 23 will permit the rolls to separateand immediately rcsume their normal position without in any waydisturbing the pipes for-applying the pressure to them. It will also beseen that small chambers may be employed and that these chambers may belocated in the frame and between the cap-pieces and the roll-bearings,where they are out ofthe way and do not disfiguretho machine.

While the yielding means for permitting the scpgu'ation of the rollswill preferably be used in connection with the liquid-containingchambers, they may be employed in connection with other devices forobtaining pressure on the rolls The devices for separating the rolls maybe of any approved type and are not herein shown, since they have noconnection with the invention. It may be here remarked, however, thatthe'construction which hasbcen described for forcing the rolls togetherpermits the roll-separatiug means to be operated without in any waydisturbing the adjustment of the pressure devices. When therollscparating means are operated, the steady and slow movementofthepistonsin the charm hers 6 will force the water or otherincompressible fluid from the chambers 6 back into the accumulator, thusraising its weighted piston.

'While the machines which have been hereinbcfore described areparticularly applicable to calendcririg-machincs, it is to be understood that they may be used in whole or in part in other relations. Itwill also be understood that changes and variations may be made in theconstruction shown and described without departing from the invention.The invention is not, therefore, to be limited to the precise scribed. y

Vthat isclaimed is l. The combination with a frame, of sliding hearingsmounted therein, rolls supported by the bearings, an abutment carried bythe frame, a liquid-containing chamber, a piston in said chamber, saidchamber-and piston being interposed between the roll-bearings and theabutment, means for forcing liquid into said chamber, and yielding meansfor trans- .initting the pressure on the piston to the roll-- bearings,substantially as described.

pressure necessary to proconstruction which has been do IIO frame, aliquid-containing chamber, a piston in said chamber, said chamber andpiston be ing interposed between the roll-bearings and the abutment,means for-forcing liquid into said chamber, and a suitably-mountedspring cooperating with the piston to transmit the pressure on thepiston to the roll-bearings, substantially as described.

3. The combination with a frame, of sliding bearings mounted therein,rolls supported by the bearings, abutments on each side of the frame, apair of liquid-containing chambers, pistons mounted therein, saidchambers and pistons being interposed between the rollbearings and theabutment's,springs mounted on the abutments and against which thepiston-heads bear, and means for forcing liquid-into said chambers,substantially as described.

4. The combination with a frame, of sliding bearings mounted therein,rolls supported by the bearings, abutments mounted on the frame, apairof liquid-containing chambers, pistons mounted in-said chambers, saidchambers and pistons being interposed between the abutments and theroll-bearings, a chamber in open communication with said pair ofchambers, a piston in said chamber, means for applying varying degreesof pressure to said piston, whereby varying degrees of pressure can beapplied to the pistons in the pair of chambers,and yielding means fortransmitting said pressure to the roll-bearings, substantially asdescribed.

5. The combination with a frame, of sliding bearin gs mounted therein,rolls supported by the bearings, abntments mounted; on the frame, a pairof liquid-containing chambers, pistons mounted in said chambers, saidchambers and pistons being interposed between the abutments and theroll-bearings, a cham-' her in open communication with said .pairofchambers, a piston in said chambers, means for applying varying degreesof pressure to said piston, whereby varying degrees of pressure can beapplied to the pistons in the pair of chambers, and-a spring fortransmitting said pressure to the roll-bearings, subsiantially asdescribed.

6. The combination with a frame, of sliding bearings mounted therein,rolls supported by said bearings, abutments mounted on the frame,springs carried by the abutments, a pair of liquid-containing chambers,pistons mounted in said chambers, said chambers and pistonsbeinginterposed between thenollbearings and the springs, aliquid-containing chamber in open communication with said pair ofchambers, a piston in said chamber, means whereby said piston may becaused to support a series of weights whereby varying degrees ofpressure may be applied to said piston, and a spring for transmittingsaid pressure to the roll-bearings, substantially as described. I

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

- MYRON J. WI-IITLOCK. Witnesses:

WALTER PERRY, LAWnnncE K. BLACKMAN.

